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All Journal HAYATI Journal of Biosciences The Indonesian Journal of Gastroenterology, Hepatology and Digestive Endoscopy
Tadashi Sato
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Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Medicine & Pharmacology

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Selection of early maturing and high yielding mutants of Toraja Local Red Rice Grown from M2-M3 Population after Ion Beam Irradiation Sjahril, Rinaldi; Trisnawaty, A. R.; Riadi, Muhammad; Rafiuddin, Rafiuddin; Sato, Tadashi; Toriyama, Kinya; Hayashi, Yoriko; Abe, Tomoko
HAYATI Journal of Biosciences Vol. 27 No. 2 (2020): April 2020
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (363.258 KB) | DOI: 10.4308/hjb.27.2.166

Abstract

This study aims to obtain the genotype of local Toraja red rice M2 mutants that have the potential to be developed into early maturing varieties and have high yields. Research carried out with a mass selection method consisting of two irradiation treatments, namely: (1) irradiation with a Carbon ion dose of 150 Gy (PL-C); (2) irradiation with Argon ion dose of 10 Gy (PL-A) and control as a comparison. Selected strains of M2 seed population were planted in experimental strains plus 2 strains as control, each row had 50 plants. Selection is done in two stages. The first stage, the selection is based on the criteria of plant growth components, to select rice plants that have early-middle age characters, dwarf-semi-dwarf, and many tillers. The second stage, selected strains from the scoring method were then grouped based on the degree of similarity with the cluster analysis method. Irradiation with ion beams produces mutants with shorter harvest times than their parents, with the harvest time 16-17 days or 10% shorter compared to their parents. This study produced 10 selected strains, 5 strains of carbon ion and 5 strains of argon ion irradiation treatment, and formed 5 groups with a 90% similarity coefficient.
Life Style Factors Influencing Serum Pepsinogen Levels in Healthy Japanese: A Prospective Study Murdani Abdullah; Fumiaki Kitahara; Tadashi Sato; Yuichiro Kojima; Abdul Aziz Rani; Masayuki A. Fujino
The Indonesian Journal of Gastroenterology, Hepatology, and Digestive Endoscopy VOLUME 4, NUMBER 1, April 2003
Publisher : The Indonesian Society for Digestive Endoscopy

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24871/4120036-10

Abstract

Background: Gastric cancer mass screening using serum pepsinogen has been recognized and several advantages of this methods over photofluorography have been shown by previous study. Aims: To determine the factors influence the serum pepsinogen levels in healthy subjects. Subjects Methods: One thousand and one hundred fourteen subjects who were screened for gastric cancer as part of a periodic health check. Blood samples were taken after fasting and stored below –20 ° C, until pepsinogen levels were assayed. Results: The subjects consist of 338 males (mean age 52.6+14.0) and 776 females (mean age 49.0+11.9). Age ranges from 19 to 81 years. The overall prevalence of chronic atrophic gastritis using a criterion PG I £ 70 hg/ml and PG I/II ratio £ 3.0 was 21.99 % in 1996 and 23.97 % in 2000. Bivariate analysis revealed a significant association between age, more salt consumption, fish favorable over meat and less than three time meal intake covariates with the lowering of PG I/II ratio. Smoking, drinking, BMI, weight and gender did not affect the changes of PG I/II ratio. Conclusion: Age and more salt consumption covariates have a strongest association with the decreased of PG I/II by multivariate analysis. Keywords: pepsinogen, dietary, drinking, smoking, atrophic gastritis
Expression of Cyclooxygenase Enhances Tumor Invasion and Metastasis in Human Gastric Carcinoma Murdani Abdullah; Abdul Aziz Rani; Daldiyono Hardjodisastro; Hiroyuki Otsuka; Tadashi Sato; Yuichiro Kojima; Masayuki A Fujino
The Indonesian Journal of Gastroenterology, Hepatology, and Digestive Endoscopy VOLUME 5, ISSUE 2, August 2004
Publisher : The Indonesian Society for Digestive Endoscopy

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24871/52200443-47

Abstract

Background: Expression of COX-2 in vitro has been shown to have a number of cellular effects including increasing proliferation, reducing apoptosis promoting angiogenesis, decreasing E-cadherin expression and increasing invasive/metastatic potential. Aims: To determine the role of COX-2 in the development and metastasis potential of gastric carcinoma in human subjects. Methods: Tissue samples were obtained from surgically removed specimens of 48 patients with primary gastric adenocarcinoma who underwent gastrectomy from January 1998 to December 1999. The specimens were stained for HE while COX-2 expressions in cancer fold and antrum site were evaluated immunohistochemically. Expression of COX-2 was defined as positive when either one of cancer lesion or antrum site showed immunoreactivity. Results: Preliminary result from 12 out of 48 cases, COX-2 immunoreactivity was detected in 50% (6 of 12 specimens). Expression of COX-2 were more frequent in tumor with serosal invasion (5 of 6 specimens), lymph node metastases (3 of 3 specimens), tumor size more than 4 cm and were significant, statistically (p0.05). The expression of COX-2 in well differential carcinoma type was similar with in poorly differentiated carcinoma type. Conclusion: COX-2 expression in gastric carcinoma tissue is correlated closely with tumor size, serosal invasion and lymph node metastases, indicating that COX-2 is involved in the growth and metastases of gastric carcinoma. Keywords: Gastric carcinoma, cyclooxygenase-2, invasion, immunochemistry
Co-Authors Abdul Aziz Rani Abdul Aziz Rani Abe, Tomoko Daldiyono Hardjodisastro Fumiaki Kitahara Hayashi, Yoriko Hiroyuki Otsuka Masayuki A Fujino Masayuki A. Fujino Muhammad Riadi, Muhammad Murdani Abdullah Murdani Abdullah Rafiuddin, Rafiuddin Rinaldi Sjahril, Rinaldi toriyama, kinya Trisnawaty AR Yuichiro Kojima